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Posted to dev@hive.apache.org by "Phabricator (Updated) (JIRA)" <ji...@apache.org> on 2012/01/12 07:53:41 UTC

[jira] [Updated] (HIVE-2340) optimize orderby followed by a groupby

     [ https://issues.apache.org/jira/browse/HIVE-2340?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Phabricator updated HIVE-2340:
------------------------------

    Attachment: HIVE-2340.D1209.1.patch

navis requested code review of "HIVE-2340 [jira] optimize orderby followed by a groupby".
Reviewers: JIRA

  DPAL-592 optimize orderby followed by a groupby

  Before implementing optimizer for JOIN-GBY, try to implement RS-GBY optimizer(cluster-by following group-by).

TEST PLAN
  EMPTY

REVISION DETAIL
  https://reviews.facebook.net/D1209

AFFECTED FILES
  ql/src/java/org/apache/hadoop/hive/ql/exec/ExplainTask.java
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/ColumnPrunerProcFactory.java
  ql/src/java/org/apache/hadoop/hive/ql/optimizer/ReduceSinkDeDuplication.java
  ql/src/test/queries/clientpositive/reduce_deduplicate_extended.q
  ql/src/test/results/clientpositive/reduce_deduplicate_extended.q.out

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> optimize orderby followed by a groupby
> --------------------------------------
>
>                 Key: HIVE-2340
>                 URL: https://issues.apache.org/jira/browse/HIVE-2340
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Query Processor
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Minor
>         Attachments: HIVE-2340.1.patch.txt, HIVE-2340.D1209.1.patch
>
>
> Before implementing optimizer for JOIN-GBY, try to implement RS-GBY optimizer(cluster-by following group-by).

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